/**
 * 点击波纹效果
 *
 * @param  {[event]} e        [description]
 * @param  {[Object]} arg_opts [description]
 * @return {[bollean]}          [description]
 */
export default function (e, arg_opts) {
  var opts = Object.assign(
    {
      ele: e.target, // 波纹作用元素
      type: "hit", // hit点击位置扩散center中心点扩展
      bgc: "rgba(0, 0, 0, 0.15)" // 波纹颜色
    },
    arg_opts
  );
  var target = opts.ele;
  if (target) {
    var rect = target.getBoundingClientRect();
    var ripple = target.querySelector(".e-ripple");
    if (!ripple) {
      ripple = document.createElement("span");
      ripple.className = "e-ripple";
      ripple.style.height = ripple.style.width = Math.max(rect.width, rect.height) + "px";
      target.appendChild(ripple);
    } else {
      ripple.className = "e-ripple";
    }
    switch (opts.type) {
      case "center":
        ripple.style.top = rect.height / 2 - ripple.offsetHeight / 2 + "px";
        ripple.style.left = rect.width / 2 - ripple.offsetWidth / 2 + "px";
        break;
      default:
        ripple.style.top = e.pageY - rect.top - ripple.offsetHeight / 2 - document.body.scrollTop + "px";
        ripple.style.left = e.pageX - rect.left - ripple.offsetWidth / 2 - document.body.scrollLeft + "px";
    }
    ripple.style.backgroundColor = opts.bgc;
    ripple.className = "e-ripple z-active";
    return false;
  }
}
